Date-to-date calculator

Days between dates

Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.

Excluding the start date

250,680 days

From Thursday, May 12, 1340 to Sunday, September 13, 2026.

Monday–Friday weekdays179,056
Weeks and days35,811w 3d
Calendar span686 years, 4 months, 1 day

Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.